High aquarium nitrate levels can cause a variety of issues for your fish including increased stress, lower immunity, decreased ability to reproduce, and promotes algae growth. Acurel Nitrate Reducer Media Pads will maintain safe nitrate levels in your aquarium or pond water, ultimately helping to increase your fish's life span.Like all our infused media pads, our long-lasting polyfiber material is up to twice as thick and is much more rigid than competing nitrate remover pads, enabling them to fit tighter, hold their shape longer, filter more effectively, and last longer.These pads will:Quickly reduce nitrates to safe levelsPromote beneficial bacteria colonies for a healthier aquatic environment. Effectively remove all organic particles, foreign debris, residual medications, excess food and wasteImprove and maintain fish healthImprove water quality. To Use: Our Media Pads can be used in fresh or saltwater aquariums or ponds. They can be cut to fit any aquarium or pond filtration unit including hang-on filters, canister filters, top filters, internal filters, wet/dry filters and more.